Adapter for tire repair device



May l0, 1966 T. BEST ADAPTER FOR TIRE REPAIR DEVICE Filed sept. 2a, 1964 FIG. 4

United States Patent Oiiice` 3,250,156 Patented May 10, 1966 3,250,156 ADAPTER FOR TIRE REPAIR DEVICE Thomas Best, 10310 Tennessee Ave., Los Angeles, Calif. Filed Sept. 28, 1964, Ser. No. 399,487

Claims. (Cl. 81-15.7)`

This invention pertains to an improvement over Patent No. 3,083,597, issued to me April 2, 1963, and my copending application Serial No. 391,892 tiled August 25, 1964 for Repair Device.

The inventions described and claimed in my patent and patent application are adapted to use repair plugs of a given size range, say, of approximately 3A -inch stem diameter. However, when Iit is desired to utilize a plug of a larger (Le. 7/16- to 1/z-inch) or a smaller (i.e. 1A-inch) diameter it was necessary, prior to my invention, to use a dilferent size gun th-an that used for the 3r-inch diameter plugs.

Itis an object of my invention to provide an adapter for use with a gun designed to re plugs of a given stem diameter which will ire plugs of considerably larger or smaller stem diameter.

It is a further object of this invention to provide an adapter usable with a gun for firing plugs of a given diameter that will re plugs of a materially diierent diameter. v

Other objects of the invention will become apparent from the following description taken in connection with the accompanying drawings in which FIG. 1 is a sectional view of the prior art gun shown in my Patent No. 3,083,597;

FIG. 2 is a sectional view yof the adapter comprising my present invention for use with the gun of my patent;

FIG. 3 is a sectional view of the adapter applied to the gun of my patent; and

FIG. 4 is a sectional view of the adapter applied to the gun of my patent application Serial No. 391,892.

Referring now to the drawings, the gun comprises a handle 1 provided with a trigger 2 slidably received in opening 16 in handle 1. Trigger 2 is provided with flanges 17, 18, 19 and 20 forming with the stem' 21 a valve 4y which is held in the forward position in opening 16 by spring 3. The handle 1 is provided with an opening 22 adapted to be connected to a source of compressed air or other gas. Opening 22 leads to passageway 23 which is connected to passageway 24 upon pressing trigger 2 to bring the portion 25 of stem 21 in such position `as to connect passageways 23 and 24. O-rings 5 are provided between llanges 17 and 18 as well as between 19 and 20 to seal against leakage of air from the valve piston.

' Trigger member 2 and valve piston 4 yare retained in the handle -of the gun by a retainer member 6. Attached to the handle is a cylinder 26 adapted to be fastened thereto by any suitable manner such as by bonding or by way of a screw member' 7. A sealing member 8 may be provided if so desired. Attached to the other end of cylinder member 26 is an adapter member 14 which is connected to the cylinder 26 by a suitable screw 27. A nozzle is attached by screw threads 28 to the front end of the adapter member. This nozzle is provided with a tapered portion 29 an-d a passageway 30. Slidably re- Ceived Within cylinder 26 is a piston member 11 provided with anO-ring sealing means 10. Piston rod 13 is attached to piston 11 by nut 9. Rod 13 is slidably received in passageway 31 of adapter member 14. Piston rod 13 is provided at its forward end with a flanged nipple 32 for engagement with a recess in the repair plug according to the arrangement shown in FIG. 3. A spring 12 is placed interiorly of cylinder 26 and around piston rod 13 to hold it normally in a rearward position as shown in FIG. l. The adapter member 14 is provided at its rear end with a stop member 33 for limiting forward movement of piston 11 and likewise piston rod 13.

When it is desired to fire a plugrof larger diameter than that for which the gun in FIG. 1 is designed to tire, the piggy-back adapter illustrate-d in FIG. 2 is screwed on to the adapter member 14 of the gun after first unscrewing the nozzle 15 therefrom. The piggy-back adapter comprises a member 46 having an internally screwthreaded portion 47 designedto iit with the threaded portion 28 -of member 14. Member 46 is provided with a cylindrical portion 48 of substantially the same diameter as passageway 31 of member 14 and adapted to slidably receive an adapter ram 49 provided with a cutout portion 50 for receiving nipple 32 of ram 13 when end 34 of ram 13 engages end `51 of adapter ram 49. Member 46 is provided with `an enlarged cylindrical portion 52 for slidably receiving an enlarged cylindrical portion 53 of adapter ram 49. Adapter ram 49 is also provided with a nipple 54 for use with plugs of the type illustrated in FIG. 5 of Patent No. 3,083,597, as illustrated in FIG. 3 of this disclosure. This nipple may be omitted when used with the arrangement shown in my co-pending application Serial No. 391,892. Member 46 is provided with exterior screw threads 55 for attachment of adapter nozzle 56 having corresponding interior screw threads.

Adapter nozzle 56 hasA a passageway 57, a tapered surface 58 and an end 59 which corresponds with nozzle 15 of FIG. 1 except that it is of larger proportions to rei ceive a larger plug.

The length of the adapter ram 49 from its point of engagement with end 34 of ram 13 to the end 60 of portion 53 thereof is coordinated with the length of adapter member 46 and the tapered portion 58 of nozzle 56 so that the rear end of the plug 43 lis confined at the en-d of forward movement of rams 13 and 49 the same as in my patent, 3,083,597 where the ram in FIG. 3 of this disclosure is used and the plug 43a is confined as in my pending application when the arrangement in FIG. 4 of this disclosure is used.

Although the invention has been described and illustrated in detail, it is to be clearly understood that lthe same is by way of illustration and example only and is not to be taken by way of limitation, the spirit and scope of this invention being limited only by the terms of the appended claims.

I claim:

1. In combination with a tire repair gun having a cylindricalv member for receiving a tirel repair plug having a stem of a given diameter, a nozzle of smaller interior diameter than said given diameter, a tapered portion connecting said cylindrical member and said nozzle, and a ram .for forcing said plug from said cylindrical member through said tapered portion into said nozzle and for restraining the -rear end of said plug with the stem of said plug lling said nozzle; an adapter for receiving a plug of a larger diameter than said given diameter, said adapter being connectible to said cylindrical member and having an interior diameter for a portion of its length substantially the same as said given diameter and an interior diameter for the remainder of its length greater than said given diameter, an adapter ram in said adapter having a diameter for a portion of its length substantially the same as said given diameter and a diameter for the remainder of its length greater than said given diameter, and means for aflixing an adapter nozzle to the front end of said adapter.

2. A device asrecited in claim 1 in which said adapter nozzle has an interior diameter smaller than said greater diameter of said adapter and a tapered portion connecting the interior diameter of said adapter nozzle with said greater diameter of said adapter.

3. A device as recited in claim 2 in which said adapter ram is operatively engaged by said ram of said repair gun and is of `such a length that it coacts with the tapered portion of said adapter nozzle and the rear of theplug in said adapter to restrain said plug with the stern of the same iilling the interior Vof said adapter nozzle.

4. For use with a tire repair *device having a cylindrical member for receiving a plug of a given diameter and a ram for forcing said plug from said cylindrical member into a nozzle for placement in a puncture hole in a tire, an adapter for attachment of said cylindrical member, said adapter having an interior diameter for a portion of its length substantially the same as said given diameter and Ian interior diameter for the remaining portion of its length greater than that of said given diameter, an adapter ram in said adapter having a diameter for a portion of its length substantially the same as said given diameter and a diameter for the remaining portion of its length substantially the same as said larger diameter, the forward portion of said adapter member being connectible to an adapter nozzle having an interior diameter smaller than said larger diameter and a tapered portion connecting said smaller diameter to said larger diameter, said adapter ram being engageable by said rst named ram for forcing a plug placed in said larger diameter portion of said adaptram for forcing said plug from said cylindrical member through said tapered portion into said nozzle and coacting with said tapered portion to restrain the rear end of said plug With the stem of said plug filling said nozzle; an adapter connectible to said cylindrical member `for receiving an adapter plug of a larger diameter than said given diameter, said adapter having an interior diameter for a portion of its length substantially the same as said given diameter and an interior diameter for the remainder of its length greater than said given diameter, an adapter ram in said adapter having a diameter for a portion of its length substantially the same'as said given diameter and a diameter for the remainder of its length larger than said given diameter, means for ailixing to the front end of said adapter an adapter nozzle of smaller interior diameter than the larger diameter of said adapter and a tapered portion connectingsaid nozzle with Said larger diameter, lsaid adapter ram lbeing engageable by said first named ram for forcing said plug from said adapter into said adapter nozzle and for coacting with said tapered portion to restrain the rear end of said plug with the stem of said plug lling said nozzle.

References Cited by the Examiner UNITED STATES PATENTS 3,052,141 9/1962 Mitchell -..8l-15.7

WILLIAM FELDMAN, Primary Examiner.

O. M. SIMPSON, Assistant Examiner. 

1. IN COMBINATION WITH A TIRE REPAIR GUN HAVING A CYLINDRICAL MEMBER FOR RECEIVING A TIRE REPAIR PLUG HAVING A STEM OF A GIVEN DIAMETER, A NOZZLE OF SMALLER INTERIOR DIAMETER THAN SAID GIVEN DIAMETER, A TAPERED PORTION CONNECTING SAID CYLINDRICAL MEMBER AND SAID NOZZLE, AND A RAM FOR FORCTING SAID PLUG FROM SAID CYLINDRICAL MEMBER THROUGH SAID TAPERED PORTION INTO SAID NOZZEL AND FOR RESTRAINING THE REAR END OF SAID PLUG WITH THE STEM OF SAID PLUG FILLING SAID NOZZLE; AN ADAPTER FOR RECEIVING A PLUG OF A LARGER DIAMETER THAN SAID GIVEN DIAMETER, SAID DIAMETER BEING CONNECTIBLE TO SAID CYLINDRICAL MEMBER AND HAVING AN INTERIOR DIAMETER FOR A PORTION OF ITS LENGTH SUBSTANTIALLY THE SAME AS SAID GIVEN DIAMETER AND AN INTERIOR DIAMETER FOR THE REMAINDER OF ITS LENGTH GREATER THAN SAID GIVEN DIAMETER, AN ADAPTER RAM IN SAID ADAPTER HAVING A DIAMETER FOR A PORTION OF ITS LENGTH SUBSTANTIALLY THE SAME AS SAID GIVEN DIAMETER AND A DIAMETER FOR THE REMAINDER OF ITS LENGTH GREATER THAN SAID GIVEN DIAMETER, AND MEANS FOR AFFIXING AN ADAPTER NOZZLE TO THE FRONT END OF SAID ADAPTER. 